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melamori03 [73]
3 years ago
6

PLEASE HELP ASAP 15 POINTS

Mathematics
1 answer:
kaheart [24]3 years ago
4 0

1/2(4x-5) + 5/2 = 10

Use the distributive property:

2x - 5/2 + 5/2 = 10

Use addition property:

2x = 10

Divide both sides by 2:

x = 10/2

x = 5

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A rectangle has a perimeter of 48 ft. The length and width are scaled by a factor 1.5.
prohojiy [21]

Answer: 75

Step-by-step explanation:

when increased in scale,

both sides are multiplied by the factor which is 1.5.

72 =1.5(2L+2W)

Mark me as brainliest

7 0
3 years ago
Resistors are labeled 100 Ω. In fact, the actual resistances are uniformly distributed on the interval (95, 103). Find the mean
Zinaida [17]

Answer:

E[R] = 99 Ω

\sigma_R = 2.3094 Ω

P(98<R<102) = 0.5696

Step-by-step explanation:

The mean resistance is the average of edge values of interval.

Hence,

The mean resistance, E[R] = \frac{a+b}{2}  = \frac{95+103}{2} = \frac{198}{2} = 99 Ω

To find the standard deviation of resistance, we need to find variance first.

V(R) = \frac{(b-a)^2}{12} =\frac{(103-95)^2}{12} = 5.333

Hence,

The standard deviation of resistance, \sigma_R = \sqrt{V(R)} = \sqrt5.333 = 2.3094 Ω

To calculate the probability that resistance is between 98 Ω and 102 Ω, we need to find Normal Distributions.

z_1 = \frac{102-99}{2.3094} = 1.299

z_2 = \frac{98-99}{2.3094} = -0.433

From the Z-table, P(98<R<102) = 0.9032 - 0.3336 = 0.5696

5 0
3 years ago
20(square of 2) + 6(9 + 3) <br> ANSWER: 472
Rainbow [258]
What’s the question your asking here ?
4 0
2 years ago
Read 2 more answers
Please this is overdue​
andre [41]

P=12

A=15

brainiest plizz?

3 0
2 years ago
Read 2 more answers
Please help me with this...
marusya05 [52]
218 hope this helped
6 0
3 years ago
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